Credit: Kevin Mazur/

Talk about must-see TV: When Eric Johnson asked Jessica Simpson to marry him, she was otherwise engaged...with a juicy episode of NBC's Parenthood.

"I was watching Parenthood at the time," Simpson, 30, said of Johnson's proposal during a SIRIUS XM radio interview for The Morning Mash Up.

Her ex-NFLer beau, 31, "made me pause it," the singer explains. "I was like, 'It's a really good part in Parenthood…it's an emotional fight right now.'"

"[Eric's] like, 'I know, but I just got to show you something.'"

Once he finally got her undivided attention, Johnson asked for her hand with a Neil Lane ruby-and-diamond sparkler worth an estimated $150,000. "I was shaking [and] short of breath!" Simpson said of his surprise proposal.

As previously reported, Johnson hid the ring in a shoe in her house and forewarned her parents and sister Ashlee-Simpson Wentz three weeks before popping the question.

"It was definitely one of those moments where I’ve never felt that way before, ever," the star said in her Morning Mashup chat. "I can't believe all the Simpsons kept a secret."

The interview will air in its entirety on Thursday.